!                Parallel Sparse BLAS   GPU plugin 
!      (C) Copyright 2013
!  
!                         Salvatore Filippone
!                         Alessandro Fanfarillo
!   
!    Redistribution and use in source and binary forms, with or without
!    modification, are permitted provided that the following conditions
!    are met:
!      1. Redistributions of source code must retain the above copyright
!         notice, this list of conditions and the following disclaimer.
!      2. Redistributions in binary form must reproduce the above copyright
!         notice, this list of conditions, and the following disclaimer in the
!         documentation and/or other materials provided with the distribution.
!      3. The name of the PSBLAS group or the names of its contributors may
!         not be used to endorse or promote products derived from this
!         software without specific written permission.
!   
!    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
!    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
!    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
!    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
!    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
!    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
!    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
!    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
!    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
!    POSSIBILITY OF SUCH DAMAGE.
!   
  
module psb_d_rsb_mat_mod

  use psb_d_base_mat_mod
  use iso_c_binding

  type, extends(psb_d_base_sparse_mat) :: psb_d_rsb_sparse_mat
     
     type(c_ptr) :: rsbMat = c_null_ptr

  contains
 !   procedure, pass(a) :: get_size     => d_rsb_get_size
    procedure, pass(a) :: get_nzeros   => d_rsb_get_nzeros
    procedure, nopass  :: get_fmt      => d_rsb_get_fmt
    procedure, pass(a) :: sizeof       => d_rsb_sizeof
 !   procedure, pass(a) :: csmm         => psb_d_rsb_csmm
    procedure, pass(a) :: csmv         => psb_d_rsb_csmv
    ! procedure, pass(a) :: inner_cssm   => psb_d_rsb_cssm
    ! procedure, pass(a) :: inner_cssv   => psb_d_rsb_cssv
    ! procedure, pass(a) :: scals        => psb_d_rsb_scals
    ! procedure, pass(a) :: scalv        => psb_d_rsb_scal
    ! procedure, pass(a) :: maxval       => psb_d_rsb_maxval
    ! procedure, pass(a) :: csnmi        => psb_d_rsb_csnmi
    ! procedure, pass(a) :: csnm1        => psb_d_rsb_csnm1
    ! procedure, pass(a) :: rowsum       => psb_d_rsb_rowsum
    ! procedure, pass(a) :: arwsum       => psb_d_rsb_arwsum
    ! procedure, pass(a) :: colsum       => psb_d_rsb_colsum
    ! procedure, pass(a) :: aclsum       => psb_d_rsb_aclsum
    ! procedure, pass(a) :: reallocate_nz => psb_d_rsb_reallocate_nz
    ! procedure, pass(a) :: allocate_mnnz => psb_d_rsb_allocate_mnnz
    procedure, pass(a) :: cp_to_coo    => psb_d_cp_rsb_to_coo
    procedure, pass(a) :: cp_from_coo  => psb_d_cp_rsb_from_coo
    ! procedure, pass(a) :: cp_to_fmt    => psb_d_cp_rsb_to_fmt
    ! procedure, pass(a) :: cp_from_fmt  => psb_d_cp_rsb_from_fmt
!    procedure, pass(a) :: mv_to_coo    => psb_d_mv_rsb_to_coo
    procedure, pass(a) :: mv_from_coo  => psb_d_mv_rsb_from_coo
    ! procedure, pass(a) :: mv_to_fmt    => psb_d_mv_rsb_to_fmt
    ! procedure, pass(a) :: mv_from_fmt  => psb_d_mv_rsb_from_fmt
    ! procedure, pass(a) :: csput        => psb_d_rsb_csput
    ! procedure, pass(a) :: get_diag     => psb_d_rsb_get_diag
    ! procedure, pass(a) :: csgetptn     => psb_d_rsb_csgetptn
    ! procedure, pass(a) :: csgetrow     => psb_d_rsb_csgetrow
    ! procedure, pass(a) :: get_nz_row   => d_rsb_get_nz_row
    ! procedure, pass(a) :: reinit       => psb_d_rsb_reinit
    ! procedure, pass(a) :: trim         => psb_d_rsb_trim
    ! procedure, pass(a) :: print        => psb_d_rsb_print
    procedure, pass(a) :: free         => d_rsb_free
    ! procedure, pass(a) :: mold         => psb_d_rsb_mold

  end type psb_d_rsb_sparse_mat

  private :: d_rsb_get_nzeros, d_rsb_free,  d_rsb_get_fmt, &
       & d_rsb_get_size, d_rsb_sizeof, d_rsb_get_nz_row

  interface
    subroutine  psb_d_rsb_reallocate_nz(nz,a) 
      import :: psb_d_rsb_sparse_mat, psb_ipk_
      integer(psb_ipk_), intent(in) :: nz
      class(psb_d_rsb_sparse_mat), intent(inout) :: a
    end subroutine psb_d_rsb_reallocate_nz
  end interface
  
  interface 
    subroutine psb_d_rsb_reinit(a,clear)
      import :: psb_d_rsb_sparse_mat
      class(psb_d_rsb_sparse_mat), intent(inout) :: a   
      logical, intent(in), optional :: clear
    end subroutine psb_d_rsb_reinit
  end interface
  
  interface
    subroutine  psb_d_rsb_trim(a)
      import :: psb_d_rsb_sparse_mat
      class(psb_d_rsb_sparse_mat), intent(inout) :: a
    end subroutine psb_d_rsb_trim
  end interface
  
  interface 
    subroutine psb_d_rsb_mold(a,b,info) 
      import :: psb_d_rsb_sparse_mat, psb_d_base_sparse_mat, psb_ipk_
      class(psb_d_rsb_sparse_mat), intent(in)                  :: a
      class(psb_d_base_sparse_mat), intent(inout), allocatable :: b
      integer(psb_ipk_), intent(out)                           :: info
    end subroutine psb_d_rsb_mold
  end interface

  interface
    subroutine  psb_d_rsb_allocate_mnnz(m,n,a,nz) 
      import :: psb_d_rsb_sparse_mat, psb_ipk_
      integer(psb_ipk_), intent(in) :: m,n
      class(psb_d_rsb_sparse_mat), intent(inout) :: a
      integer(psb_ipk_), intent(in), optional :: nz
    end subroutine psb_d_rsb_allocate_mnnz
  end interface
  
  interface
    subroutine psb_d_rsb_print(iout,a,iv,head,ivr,ivc)
      import :: psb_d_rsb_sparse_mat, psb_ipk_
      integer(psb_ipk_), intent(in)           :: iout
      class(psb_d_rsb_sparse_mat), intent(in) :: a   
      integer(psb_ipk_), intent(in), optional :: iv(:)
      character(len=*), optional              :: head
      integer(psb_ipk_), intent(in), optional :: ivr(:), ivc(:)
    end subroutine psb_d_rsb_print
  end interface
  
  interface 
    subroutine psb_d_cp_rsb_to_coo(a,b,info) 
      import :: psb_d_coo_sparse_mat, psb_d_rsb_sparse_mat, psb_ipk_
      class(psb_d_rsb_sparse_mat), intent(in)    :: a
      class(psb_d_coo_sparse_mat), intent(inout) :: b
      integer(psb_ipk_), intent(out)             :: info
    end subroutine psb_d_cp_rsb_to_coo
  end interface
  
  interface 
    subroutine psb_d_cp_rsb_from_coo(a,b,info) 
      import :: psb_d_rsb_sparse_mat, psb_d_coo_sparse_mat, psb_ipk_
      class(psb_d_rsb_sparse_mat), intent(inout) :: a
      class(psb_d_coo_sparse_mat), intent(in)    :: b
      integer(psb_ipk_), intent(out)             :: info
    end subroutine psb_d_cp_rsb_from_coo
  end interface
  
  interface 
    subroutine psb_d_cp_rsb_to_fmt(a,b,info) 
      import :: psb_d_rsb_sparse_mat, psb_d_base_sparse_mat, psb_ipk_
      class(psb_d_rsb_sparse_mat), intent(in)     :: a
      class(psb_d_base_sparse_mat), intent(inout) :: b
      integer(psb_ipk_), intent(out)              :: info
    end subroutine psb_d_cp_rsb_to_fmt
  end interface
  
  interface 
    subroutine psb_d_cp_rsb_from_fmt(a,b,info) 
      import :: psb_d_rsb_sparse_mat, psb_d_base_sparse_mat, psb_ipk_
      class(psb_d_rsb_sparse_mat), intent(inout) :: a
      class(psb_d_base_sparse_mat), intent(in)   :: b
      integer(psb_ipk_), intent(out)             :: info
    end subroutine psb_d_cp_rsb_from_fmt
  end interface
  
  interface 
    subroutine psb_d_mv_rsb_to_coo(a,b,info) 
      import :: psb_d_rsb_sparse_mat, psb_d_coo_sparse_mat, psb_ipk_
      class(psb_d_rsb_sparse_mat), intent(inout) :: a
      class(psb_d_coo_sparse_mat), intent(inout) :: b
      integer(psb_ipk_), intent(out)             :: info
    end subroutine psb_d_mv_rsb_to_coo
  end interface
  
  interface 
    subroutine psb_d_mv_rsb_from_coo(a,b,info) 
      import :: psb_d_rsb_sparse_mat, psb_d_coo_sparse_mat, psb_ipk_
      class(psb_d_rsb_sparse_mat), intent(inout) :: a
      class(psb_d_coo_sparse_mat), intent(inout) :: b
      integer(psb_ipk_), intent(out)             :: info
    end subroutine psb_d_mv_rsb_from_coo
  end interface
  
  interface 
    subroutine psb_d_mv_rsb_to_fmt(a,b,info) 
      import :: psb_d_rsb_sparse_mat, psb_d_base_sparse_mat, psb_ipk_
      class(psb_d_rsb_sparse_mat), intent(inout)  :: a
      class(psb_d_base_sparse_mat), intent(inout) :: b
      integer(psb_ipk_), intent(out)              :: info
    end subroutine psb_d_mv_rsb_to_fmt
  end interface
  
  interface 
    subroutine psb_d_mv_rsb_from_fmt(a,b,info) 
      import :: psb_d_rsb_sparse_mat, psb_d_base_sparse_mat, psb_ipk_
      class(psb_d_rsb_sparse_mat), intent(inout)  :: a
      class(psb_d_base_sparse_mat), intent(inout) :: b
      integer(psb_ipk_), intent(out)              :: info
    end subroutine psb_d_mv_rsb_from_fmt
  end interface
  
  interface 
    subroutine psb_d_rsb_csput(nz,ia,ja,val,a,imin,imax,jmin,jmax,info,gtl) 
      import :: psb_d_rsb_sparse_mat, psb_dpk_, psb_ipk_
      class(psb_d_rsb_sparse_mat), intent(inout) :: a
      real(psb_dpk_), intent(in)      :: val(:)
      integer(psb_ipk_), intent(in)             :: nz,ia(:), ja(:),&
           &  imin,imax,jmin,jmax
      integer(psb_ipk_), intent(out)            :: info
      integer(psb_ipk_), intent(in), optional   :: gtl(:)
    end subroutine psb_d_rsb_csput
  end interface
  
  interface 
    subroutine psb_d_rsb_csgetptn(imin,imax,a,nz,ia,ja,info,&
         & jmin,jmax,iren,append,nzin,rscale,cscale)
      import :: psb_d_rsb_sparse_mat, psb_dpk_, psb_ipk_
      class(psb_d_rsb_sparse_mat), intent(in)        :: a
      integer(psb_ipk_), intent(in)                  :: imin,imax
      integer(psb_ipk_), intent(out)                 :: nz
      integer(psb_ipk_), allocatable, intent(inout)  :: ia(:), ja(:)
      integer(psb_ipk_),intent(out)                  :: info
      logical, intent(in), optional        :: append
      integer(psb_ipk_), intent(in), optional        :: iren(:)
      integer(psb_ipk_), intent(in), optional        :: jmin,jmax, nzin
      logical, intent(in), optional        :: rscale,cscale
    end subroutine psb_d_rsb_csgetptn
  end interface
  
  interface 
    subroutine psb_d_rsb_csgetrow(imin,imax,a,nz,ia,ja,val,info,&
         & jmin,jmax,iren,append,nzin,rscale,cscale)
      import :: psb_d_rsb_sparse_mat, psb_dpk_, psb_ipk_
      class(psb_d_rsb_sparse_mat), intent(in)        :: a
      integer(psb_ipk_), intent(in)                  :: imin,imax
      integer(psb_ipk_), intent(out)                 :: nz
      integer(psb_ipk_), allocatable, intent(inout)  :: ia(:), ja(:)
      real(psb_dpk_), allocatable,  intent(inout)    :: val(:)
      integer(psb_ipk_),intent(out)                  :: info
      logical, intent(in), optional        :: append
      integer(psb_ipk_), intent(in), optional        :: iren(:)
      integer(psb_ipk_), intent(in), optional        :: jmin,jmax, nzin
      logical, intent(in), optional        :: rscale,cscale
    end subroutine psb_d_rsb_csgetrow
  end interface

  interface 
    subroutine psb_d_rsb_csgetblk(imin,imax,a,b,info,&
       & jmin,jmax,iren,append,rscale,cscale)
      import :: psb_d_rsb_sparse_mat, psb_dpk_, psb_d_coo_sparse_mat, psb_ipk_
      class(psb_d_rsb_sparse_mat), intent(in)    :: a
      class(psb_d_coo_sparse_mat), intent(inout) :: b
      integer(psb_ipk_), intent(in)              :: imin,imax
      integer(psb_ipk_),intent(out)              :: info
      logical, intent(in), optional        :: append
      integer(psb_ipk_), intent(in), optional    :: iren(:)
      integer(psb_ipk_), intent(in), optional    :: jmin,jmax
      logical, intent(in), optional        :: rscale,cscale
    end subroutine psb_d_rsb_csgetblk
  end interface
    
  interface 
    subroutine psb_d_rsb_cssv(alpha,a,x,beta,y,info,trans) 
      import :: psb_d_rsb_sparse_mat, psb_dpk_, psb_ipk_
      class(psb_d_rsb_sparse_mat), intent(in) :: a
      real(psb_dpk_), intent(in)          :: alpha, beta, x(:)
      real(psb_dpk_), intent(inout)       :: y(:)
      integer(psb_ipk_), intent(out)           :: info
      character, optional, intent(in)          :: trans
    end subroutine psb_d_rsb_cssv
    subroutine psb_d_rsb_cssm(alpha,a,x,beta,y,info,trans) 
      import :: psb_d_rsb_sparse_mat, psb_dpk_, psb_ipk_
      class(psb_d_rsb_sparse_mat), intent(in) :: a
      real(psb_dpk_), intent(in)          :: alpha, beta, x(:,:)
      real(psb_dpk_), intent(inout)       :: y(:,:)
      integer(psb_ipk_), intent(out)       :: info
      character, optional, intent(in)      :: trans
    end subroutine psb_d_rsb_cssm
  end interface
  
  interface 
    subroutine psb_d_rsb_csmv(alpha,a,x,beta,y,info,trans) 
      import :: psb_d_rsb_sparse_mat, psb_dpk_, psb_ipk_
      class(psb_d_rsb_sparse_mat), intent(in) :: a
      real(psb_dpk_), intent(in)          :: alpha, beta, x(:)
      real(psb_dpk_), intent(inout)       :: y(:)
      integer(psb_ipk_), intent(out)       :: info
      character, optional, intent(in)      :: trans
    end subroutine psb_d_rsb_csmv
    subroutine psb_d_rsb_csmm(alpha,a,x,beta,y,info,trans) 
      import :: psb_d_rsb_sparse_mat, psb_dpk_, psb_ipk_
      class(psb_d_rsb_sparse_mat), intent(in) :: a
      real(psb_dpk_), intent(in)          :: alpha, beta, x(:,:)
      real(psb_dpk_), intent(inout)       :: y(:,:)
      integer(psb_ipk_), intent(out)       :: info
      character, optional, intent(in)      :: trans
    end subroutine psb_d_rsb_csmm
  end interface
  
  
  interface 
    function psb_d_rsb_maxval(a) result(res)
      import :: psb_d_rsb_sparse_mat, psb_dpk_
      class(psb_d_rsb_sparse_mat), intent(in) :: a
      real(psb_dpk_)         :: res
    end function psb_d_rsb_maxval
  end interface
  
  interface 
    function psb_d_rsb_csnmi(a) result(res)
      import :: psb_d_rsb_sparse_mat, psb_dpk_
      class(psb_d_rsb_sparse_mat), intent(in) :: a
      real(psb_dpk_)         :: res
    end function psb_d_rsb_csnmi
  end interface
  
  interface 
    function psb_d_rsb_csnm1(a) result(res)
      import :: psb_d_rsb_sparse_mat, psb_dpk_
      class(psb_d_rsb_sparse_mat), intent(in) :: a
      real(psb_dpk_)         :: res
    end function psb_d_rsb_csnm1
  end interface

  interface 
    subroutine psb_d_rsb_rowsum(d,a) 
      import :: psb_d_rsb_sparse_mat, psb_dpk_
      class(psb_d_rsb_sparse_mat), intent(in) :: a
      real(psb_dpk_), intent(out)              :: d(:)
    end subroutine psb_d_rsb_rowsum
  end interface

  interface 
    subroutine psb_d_rsb_arwsum(d,a) 
      import :: psb_d_rsb_sparse_mat, psb_dpk_
      class(psb_d_rsb_sparse_mat), intent(in) :: a
      real(psb_dpk_), intent(out)              :: d(:)
    end subroutine psb_d_rsb_arwsum
  end interface
  
  interface 
    subroutine psb_d_rsb_colsum(d,a) 
      import :: psb_d_rsb_sparse_mat, psb_dpk_
      class(psb_d_rsb_sparse_mat), intent(in) :: a
      real(psb_dpk_), intent(out)              :: d(:)
    end subroutine psb_d_rsb_colsum
  end interface

  interface 
    subroutine psb_d_rsb_aclsum(d,a) 
      import :: psb_d_rsb_sparse_mat, psb_dpk_
      class(psb_d_rsb_sparse_mat), intent(in) :: a
      real(psb_dpk_), intent(out)              :: d(:)
    end subroutine psb_d_rsb_aclsum
  end interface
    
  interface 
    subroutine psb_d_rsb_get_diag(a,d,info) 
      import :: psb_d_rsb_sparse_mat, psb_dpk_, psb_ipk_
      class(psb_d_rsb_sparse_mat), intent(in) :: a
      real(psb_dpk_), intent(out)     :: d(:)
      integer(psb_ipk_), intent(out)   :: info
    end subroutine psb_d_rsb_get_diag
  end interface
  
  interface 
    subroutine psb_d_rsb_scal(d,a,info,side) 
      import :: psb_d_rsb_sparse_mat, psb_dpk_, psb_ipk_
      class(psb_d_rsb_sparse_mat), intent(inout) :: a
      real(psb_dpk_), intent(in)      :: d(:)
      integer(psb_ipk_), intent(out)   :: info
      character, intent(in), optional  :: side
    end subroutine psb_d_rsb_scal
  end interface
  
  interface
    subroutine psb_d_rsb_scals(d,a,info) 
      import :: psb_d_rsb_sparse_mat, psb_dpk_, psb_ipk_
      class(psb_d_rsb_sparse_mat), intent(inout) :: a
      real(psb_dpk_), intent(in)      :: d
      integer(psb_ipk_), intent(out)   :: info
    end subroutine psb_d_rsb_scals
  end interface
  


contains 

  ! == ===================================
  !
  !
  !
  ! Getters 
  !
  !
  !
  !
  !
  ! == ===================================

  
  function d_rsb_sizeof(a) result(res)
    implicit none 
    class(psb_d_rsb_sparse_mat), intent(in) :: a
    integer(psb_epk_) :: res

    

      
  end function d_rsb_sizeof

  function d_rsb_get_fmt() result(res)
    implicit none 
    character(len=5) :: res
    res = 'RSB'
  end function d_rsb_get_fmt
  
  function d_rsb_get_nzeros(a) result(res)
    use rsb_mod
    implicit none
    class(psb_d_rsb_sparse_mat), intent(in) :: a
    integer(psb_ipk_) :: res

    res = Rsb_get_nzeros(a%rsbMat)
    
  end function d_rsb_get_nzeros

  function d_rsb_get_size(a) result(res)
    implicit none 
    class(psb_d_rsb_sparse_mat), intent(in) :: a
    integer(psb_ipk_) :: res

  end function d_rsb_get_size


  function  d_rsb_get_nz_row(idx,a) result(res)

    implicit none
    
    class(psb_d_rsb_sparse_mat), intent(in) :: a
    integer(psb_ipk_), intent(in)           :: idx
    integer(psb_ipk_)                       :: res
    
    res = 0 
 
    
  end function d_rsb_get_nz_row



  ! == ===================================
  !
  !
  !
  ! Data management
  !
  !
  !
  !
  !
  ! == ===================================  

  subroutine  d_rsb_free(a)
    use rsb_mod
    implicit none 

    class(psb_d_rsb_sparse_mat), intent(inout) :: a

    call freeRsbMat(a%rsbMat)
    
    call a%set_null()
    call a%set_nrows(0)
    call a%set_ncols(0)
    
    return

  end subroutine d_rsb_free


end module psb_d_rsb_mat_mod